Highly Stable Two-Dimensional Bismuth Metal-Organic Frameworks for Efficient Electrochemical Reduction of CO2

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dc.contributor.authorLi, Fang
dc.contributor.authorGu, Geun Ho
dc.contributor.authorChoi, Changhyeok
dc.contributor.authorMasa, Justus
dc.contributor.authorMukerjee, Sanjeev
dc.contributor.authorJung, Yousung
dc.contributor.authorQiu, Jieshan
dc.date.accessioned2022-11-15T14:46:16Z
dc.date.available2022-11-15T14:46:16Z
dc.date.issued2020
dc.description.abstractWe report a unique 2D bismuth metal-organic framework (Bi-MOF) that possesses permanent accessible porosity for efficient electrochemical CO2 reduction (ECR) to HCOOH. The 2D open-framework structure with helical Bi-O rods bridged by tritopic carboxylate ligands exhibits a remarkable Faradaic efficiency for HCOOH formation over a broad potential window, reaching 92.2 % at ∼ –0.9 V (vs. reversible hydrogen electrode, RHE) with excellent durability over 30 h. The mass-specific HCOOH partial current density is up to 41.0 mA mgBi−1, exceeding 4 times higher than that of commercial Bi2O3 and Bi sheets at ∼ –1.1 V (vs. RHE). Operando and ex-situ X-ray absorption fine structure spectroscopy revealed a structural feature associated with Bi-MOF to preserve Bi(3+) during and after long-term ECR. Theoretical calculations further showed that the crystallographically channels with abundant Bi active sites in the MOF structure favor the formation of *HCOO while suppressing the side-reaction of hydrogen evolution, thereby leading to the high selectivity for HCOOH.en_US
dc.identifier.citationLi, F., Gu, G. H., Choi, C., Kolla, P., Hong, S., Wu, T. S., ... & Sun, Z. (2020). Highly stable two-dimensional bismuth metal-organic frameworks for efficient electrochemical reduction of CO2. Applied Catalysis B: Environmental, 277, 119241.https://doi.org/10.1016/j.apcatb.2020.119241.https://doi.org/10.1016/j.apcatb.2020.119241en_US
dc.identifier.issn0926-3373
dc.identifier.urihttps://nru.uncst.go.ug/handle/123456789/5254
dc.language.isoenen_US
dc.publisherApplied Catalysis B: Environmentalen_US
dc.subjectCO2 reduction; Electrocatalyis; Metal-organic framwork; Bismuth; Formic aciden_US
dc.titleHighly Stable Two-Dimensional Bismuth Metal-Organic Frameworks for Efficient Electrochemical Reduction of CO2en_US
dc.typeDataseten_US
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